Abdul Samadali Mohammed Hingare (32), Mohammed Shahanavaz Mohammed Faiyyaz Amani (31), Afzal Dawood Darvesh (33) and Imtiyaz Razzak Dalal (38) were produced before the judicial magistrate (first class) Pradip Meshram on Saturday afternoon. The magistrate remanded them to police custody till July 15. Police said Abdul Hingare owns a STD/ISD telephone booth at Bhendibazar in Mumbai while the others are exporters. They added that the quadruple is suspected to have helped Sayeed Desai, the Pakistani national arrested in Pune, in handing over various documents to the ISI agents in Karachi.